This patch adds MSA optimized ARGBMirrorRow function in libYUV project.

Performance gain ~3x

R=fbarchard@google.com
BUG=libyuv:634

Review URL: https://codereview.chromium.org/2368313003 .

Instead of creating symlinks on Windows, the script is now:
* creating a junction for directories
* copying individual files.

This makes 'gclient sync' and 'gclient runhooks' no longer
require administrator's privileges.
If the script is run with administrator's privileges, a
warning will be printed, informing the user that it's not recommended.

Also clean up a few old documentation references to the
Chromium SVN->Git transition.

BUG=libyuv:584,webrtc:4911
TESTED=Running the script with+without administrator's privileges.
I also tested the case of this change being rolled back, in which
case I verified that the copied files are still being deleted using
the same cleanup code path as the previous symlinks.
NOTRY=True
R=braveyao@chromium.org

Review URL: https://codereview.chromium.org/2359383002 .

follow up warning fixs
cpu_id.cc(167): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
lint warning: cpu_id.cc:171:  Missing space before ( in if(  [whitespace/parens] [5]

TBR=manojkumar.bhosale@imgtec.com
BUG=libyuv:634
TEST=try bots for windows.

Review URL: https://codereview.chromium.org/2365813002 .

As per the preparation patch added in Chromium sources at,
2150943003: Add MIPS SIMD Arch (MSA) build flags for GYP/GN builds

This patch adds first MSA optimized function in libYUV project.

BUG=libyuv:634
R=fbarchard@google.com

Review URL: https://codereview.chromium.org/2285683002 .

TBR=kjellander@chromium.org
BUG=libyuv:637, chromium:646279

Review URL: https://codereview.chromium.org/2340933005 .

../../source/scale_neon.cc:576:1: error: multi-line comment [-Werror=comment]
 // #define BLENDER(a, b, f) (uint8)((int)(a) + \
 ^

BUG=None
TEST=try bots

Review URL: https://codereview.chromium.org/2344203003 .

BUG=libyuv:635
TEST=try bots
R=harryjin@google.com

Review URL: https://codereview.chromium.org/2347733002 .

BUG=None
TEST=try bots

Review URL: https://codereview.chromium.org/2346633002 .

BUG=libyuv:636
TESTED=try bots
R=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2339813002 .

BUG=libyuv:523
R=fbarchard@google.com, kjellander@chromium.org, magjed@chromium.org

Review URL: https://codereview.chromium.org/2317073002 .

Change log: https://chromium.googlesource.com/chromium/src/+log/33f87688..94111882
Full diff: https://chromium.googlesource.com/chromium/src/+/33f87688..94111882

TBR=kjellander@chromium.org
BUG=libyuv:626

Review URL: https://codereview.chromium.org/2292373002 .

On visual c 2013 and earlier a warning is generated if externs
are not declared with the same alignment as the declaration, when
using /ltcg

BUG=libyuv:633
TEST=standalong test built with cl /Bv /GL /Ox /nologo a.cc b.cc /link /ltcg
R=skal@google.com

Review URL: https://codereview.chromium.org/2291533004 .

Add test for SplitUVPlane and MergeUVPlane

Add public methods SplitUVPlanes and MergeUVPlanes based on the
optimized assembly functions that already exists.

TEST=SplitUVPlane unittest
BUG=libyuv:629
R=braveyao@chromium.org

Review URL: https://codereview.chromium.org/2279603002 .

Add public methods SplitUVPlanes and MergeUVPlanes based on the
optimized assembly functions that already exists. Also, de-duplicate the
CPU dispatching code for these functions by moving them to helper
functions.

BUG=libyuv:629
R=braveyao@chromium.org

Review URL: https://codereview.chromium.org/2277603004 .

BUG=libyuv:631
TEST=unittests build/pass
R=harryjin@google.com

Review URL: https://codereview.chromium.org/2271053003 .

The conversion from NV12 and other Bi or Tri planar formats, differs only in the UV handling.  The helper function supports passing a NULL for the dst_y channel indicating you only want to do the UV conversion.

TBR=harryjin@google.com
TEST=LibYUVConvertTest.NV12ToI420_NullY (601 ms)
BUG=libyuv:626

Review URL: https://codereview.chromium.org/2276703002 .

TBR=magjed@chromium.org
BUG=libyuv:629
TEST=LibYUVConvertTest.NV12ToI420_Opt

Review URL: https://codereview.chromium.org/2267303002 .

TBR=harryjin@google.com
BUG=libyuv:630
TEST=local build and try bots pass

Review URL: https://codereview.chromium.org/2264293002 .

BUG=libyuv:630

TBR=harryjin@google.com
TEST=android build locally tested.

Review URL: https://codereview.chromium.org/2225763003 .

Review URL: https://codereview.chromium.org/2269793002 .

BUG=libyuv:626

Review URL: https://codereview.chromium.org/2225763003 .

Add a lot of new dependencies for the Android toolchain
to setup_links.py (added for WebRTC in https://codereview.webrtc.org/2190893002
and https://codereview.webrtc.org/2215633002).

There was no other way to get the Android test to build
than renaming the APK to yuv_unittests. That made it possible
to use build/apk_test.gypi (there's some bug somewhere that assumes
names doesn't start with "lib", see http://crbug.com/543820).

TBR=fbarchard@chromium.org
BUG=libyuv:626

Review URL: https://codereview.chromium.org/2201893007 .

contains the following changes in chromium:
https://chromium.googlesource.com/chromium/src/+log/2d938c84..7fa6701b

R=kjellander@chromium.org
TBR=kjellander@chromium.org
BUG=libyuv:626

Review URL: https://codereview.chromium.org/2183633002 .

This dependency doesn't exist in the gyp build either, and it causes
problems on builds building 'all'.

BUG=633316
R=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2201963002 .

contains the following changes in chromium:
https://chromium.googlesource.com/chromium/src/+log/2d938c84..08680295

R=kjellander@chromium.org
TBR=kjellander@chromium.org
BUG=libyuv:626

Review URL: https://codereview.chromium.org/2183663002 .

Change log: https://chromium.googlesource.com/chromium/src/+log/aa5126ff66..2d938c84f9
Full diff: https://chromium.googlesource.com/chromium/src/+/aa5126ff66..2d938c84f9

No dependencies changed.
No update to Clang.

R=kjellander@chromium.org
TBR=kjellander@chromium.org
BUG=libyuv:626,libyuv:627

Review URL: https://codereview.chromium.org/2182633005 .

We have discovered that this should increase build performance in some cases.

http://crbug.com/627637

R=fbarchard@google.com

Review URL: https://codereview.chromium.org/2163213005 .

This reverts commit a817c152.

TBR=kjellander@chromium.org
BUG=libyuv:626, webrtc:5990

Review URL: https://codereview.chromium.org/2161923003 .

This reverts commit 81d6597d.
Breaks android builds.
ninja: error: '../../testing/android/native_test/java/AndroidManifest.xml', needed by 'libyuv_unittest_apk/libyuv_unittest_apk.resources.zip', missing and no known rule to make it

R=kjellander@chromium.org
BUG=libyuv:626

Review URL: https://codereview.chromium.org/2159053002 .

A fix was needed to make Android tests pass after
https://codereview.chromium.org/2043803003

Change log: https://chromium.googlesource.com/chromium/src/+log/7fa6701bc5..1a73d11e65
Full diff: https://chromium.googlesource.com/chromium/src/+/7fa6701bc5..1a73d11e65

Changed dependencies:
* src/buildtools: https://chromium.googlesource.com/chromium/buildtools.git/+log/8dd3c8e39a..099f1da55b
* src/third_party/boringssl/src: https://boringssl.googlesource.com/boringssl.git/+log/0fc7df55c0..171b5403ee
* src/third_party/ffmpeg: https://chromium.googlesource.com/chromium/third_party/ffmpeg.git/+log/7f03319b9d..bcb8b67b8b
DEPS diff: https://chromium.googlesource.com/chromium/src/+/7fa6701bc5..1a73d11e65/DEPS

No update to Clang.

TBR=kjellander@chromium.org
BUG=libyuv:626,webrtc:5990

Review URL: https://codereview.chromium.org/2156913004 .

contains the following changes in chromium:
https://chromium.googlesource.com/chromium/src/+log/aa5126ff..7fa6701b

some trybot scripts failing.  build bots green before roll.  Will see if commit causes build bot failure.

TBR=kjellander@chromium.org
BUG=libyuv:626

Review URL: https://codereview.chromium.org/2146073004 .

contains the following changes in chromium:
https://chromium.googlesource.com/chromium/src/+log/2a818f54..aa5126ff

some trybot scripts failing.  build bots green before roll.  Will see if commit causes build bot failure.

TBR=kjellander@chromium.org
BUG=libyuv:626

Review URL: https://codereview.chromium.org/2147153004 .

Fix for duplicate define
../../third_party/libyuv/include/libyuv/scale_row.h:29:9: error: 'LIBYUV_DISABLE_X86' macro redefined [-Werror,-Wmacro-redefined]
        ^

GYP version relys on headers disabling the optimization.
This CL does the same for BUILD.gn
TBR=kjellander@chromium.org
BUG=libyuv:625

Review URL: https://codereview.chromium.org/2149823003 .

R=braveyao@chromium.org
BUG=None

Review URL: https://codereview.chromium.org/2152623002 .

Fix for unaligned memory exception.

R=braveyao@chromium.org
BUG=libyuv:616

Review URL: https://codereview.chromium.org/2152553002 .

Add alias prototype in convert_argb.h for remoting to build without the header convert_from.h

BUG=libyuv:622
TBR=harryjin@google.com

Review URL: https://codereview.chromium.org/2141923005 .

BUG=604

Review URL: https://codereview.chromium.org/2146763002 .

to Y,U,V and a pixel stride for U and V.  The pixel stride is expected to be 1 or 2.

[ RUN      ] LibYUVConvertTest.Android420ToI420_1_Any
[       OK ] LibYUVConvertTest.Android420ToI420_1_Any (253 ms)
[ RUN      ] LibYUVConvertTest.Android420ToI420_1_Unaligned
[       OK ] LibYUVConvertTest.Android420ToI420_1_Unaligned (250 ms)
[ RUN      ] LibYUVConvertTest.Android420ToI420_1_Invert
[       OK ] LibYUVConvertTest.Android420ToI420_1_Invert (254 ms)
[ RUN      ] LibYUVConvertTest.Android420ToI420_1_Opt
[       OK ] LibYUVConvertTest.Android420ToI420_1_Opt (247 ms)
[ RUN      ] LibYUVConvertTest.Android420ToI420_2_Any
[       OK ] LibYUVConvertTest.Android420ToI420_2_Any (132 ms)
[ RUN      ] LibYUVConvertTest.Android420ToI420_2_Unaligned
[       OK ] LibYUVConvertTest.Android420ToI420_2_Unaligned (122 ms)
[ RUN      ] LibYUVConvertTest.Android420ToI420_2_Invert
[       OK ] LibYUVConvertTest.Android420ToI420_2_Invert (124 ms)
[ RUN      ] LibYUVConvertTest.Android420ToI420_2_Opt
[       OK ] LibYUVConvertTest.Android420ToI420_2_Opt (119 ms)

TEST=LibYUVConvertTest.Android420ToI420_Opt
BUG=libyuv:604
R=braveyao@chromium.org

Review URL: https://codereview.chromium.org/2146733002 .

to Y,U,V and a pixel stride for U and V.  The pixel stride is expected to be 1 or 2.

TEST=LibYUVConvertTest.Android420ToI420_Opt
BUG=libyuv:604
R=braveyao@chromium.org

Review URL: https://codereview.chromium.org/2114843002 .

webrtc doesnt include the headers that the functions are prototyped in.
This CL makes the convert.h include those headers to allow webrtc to
update to the head libyuv.

TBR=harryjin@google.com
BUG=libyuv:620,webrtc:6091,webrtc:6094
TESTED=local build and try bots

Review URL: https://codereview.chromium.org/2141683002 .

TBR=harryjin@google.com
BUG=libyuv:618

Review URL: https://codereview.chromium.org/2132993003 .